Final answer:
A first-degree burn involves only the superficial layer of skin, the epidermis, and typically heals on its own quickly; mild sunburn is an example of this.
Step-by-step explanation:
The degree of burn that involves the superficial layer of skin is a first-degree burn. A first-degree burn only affects the outermost layer of the skin, which is the epidermis. Such burns cause the skin to become painful and swollen but usually heal on their own within a few days. An example of a first-degree burn would be a mild sunburn. Therefore, the correct answer to the question is E. First degree. A second-degree burn goes deeper and affects both the epidermis and a portion of the dermis. These burns result in swelling and painful blistering of the skin.